Seiko Cal. 5640 - 327

Seiko 5640-327

The Seiko 5640-327 represents an important milestone in Seiko's 1981 lineup. Powered by the 5640 caliber with 36j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-4e66b8c56de0]

Also known as: Silverwave, Emperor

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
34mm
Case Thickness
8.2mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Green
Jewels
36j
Frequency
28,800 bph
Power Reserve
62 hours
Year
1981

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